Precautions for 1–phase input to 3-phase drive
• Please connect single-phase input to R(L1) and T(L3).
• AC or DC reactor is necessary to reduce DC ripple. Please select built-in reactor type for
30~75kW. For 0.4~22kW, external AC or DC reactor should be installed.
• Same peripheral devices (including a fuse and reactor) as 3-phase can be used for 1-phase as
well.
• If phase open trip occurs, please turn off the input phase open protection(PRT-05).
• Protection for output current like OCT or IOLT is based on 3-phase input ratings which is
larger than single-phase input. User should set the parameters that are relative to motor
information(BAS-11~16), overload trip(PRT-17~22) and E-thermal functions(PRT-40~43)
• Performance of sensorless control could be unstable depending on DC ripple.
•
The minimum input voltage must
be larger than 228Vac for 240Vac supply and 456Vac for 480Vac supply
to ensure motor voltage production of 207Vac and 415Vac, respectively.
• To minimize the effect of voltage deprivation, please choose 208Vac motor for 240Vac supply
and 400Vac motor for 480Vac supply.
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